Mine is that a Billy bookcase that I bought from Ikea 25 years ago is must stronger and more stable than a Billy bookcase I bought from Ikea 5 years ago.
And, when looking at what Ikea is selling in 2025 as a Billy bookcase, it's worse yet again.
But, with the cost of living increasing, companies have to cut corners to keep pricing down.
I wonder where the inflection point is where used items become more valuable than the new items being made at current quality levels, including degradation due to age.